Characteristics of low noise hybrid fiber amplifier |
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| Authors: | Sun Hyok Chang Jin Soo Han Hee Sang Chung Kwangjoon Kim Je Soo Ko |
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| Institution: | Broadband Convergence Network Research Division, Electronics and Telecommunications Research Institute, 161 Gajeong-Dong, Yuseong-Gu, Daejeon 305-700, Republic of Korea |
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| Abstract: | The characteristics of hybrid fiber amplifier (HFA) are investigated. HFA is composed of three stages: short-length EDFA pre-stage, DCF Raman amplifier, and power boosting EDFA. HFA has low noise figure, high output power, and also wide input power dynamic range. Gain control method of HFA is presented experimentally, and the transient gain excursion is suppressed to less than 0.5 dB at 3 dB channel add-drop. HFA can be used as line amplifier in optical transmission link even combined with distributed Raman amplifier due to wide input power dynamic range. The transmission performance of HFA is better than EDFA by more than 1.0 dB of Q-factor in 720 km SMF transmission. |
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| Keywords: | Optical fiber amplifiers Optical fiber communication |
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